Easter is our spring holiday. For Christians it marks the resurrection of Christ after his crucifixion two days earlier.
For North Americans generally it marks a time of optimism, bare trees leafing out, lawns beginning to green, birds nesting, temperatures becoming decent for outdoors activities, and baseball. It has traditionally been marked by new clothes, parades, religious services, big family dinners, hunts for dyed eggs, and candy.
The Chinese virus has curtailed many of the things people do at this time, but the seasons march on inexorably. Plants are greening up, snow is melting, temperatures are warming, and the hours of daylight are increasing. The songbirds don't know there's a pandemic, so they're doing what comes naturally.
The biggest question in my mind is whether coronavirus will behave like influenza and take a summer hiatus. We can hope it will so economic activity can resume.